http://www.ubuntu.com/
I think most of you know it. I heard of that Program but I don't really know what it is and how it works. After checking the official website for it, I still couldn't understand much more..
Is that a normal program, which I can install and run normally or do I need to have Linux? Can I also use it with Windows XP?
And if anybody uses it or just knows it well, can you tell me what you think about it? Pros and cons maybe?
Best regards,
iKingsten

http://en.wikipedia.org/wiki/Ubuntu_%28operating_system%29

If you want to try Ubuntu and have no idea what it is, I suggest you try Wubi.

read what Ubuntu is before you install it, cause it aint windows

In very basic terms: Windows is an Operating System (OS). In Windows, you can run programs, for example: web browsers (Internet Explorer) and instant messengers (Windows Live Messenger). You can also store files (documents, music, etc.) and many other things. More info: Wikipedia

So now you understand what an OS is: Ubuntu is also an OS. It's something completely different to Windows. They don't run together. You can have both installed on your PC, but only use ONE at a time. Ubuntu is quite complicated for a novice user, so I wouldn't recommend using it unless you know what you're doing. Have a look on YouTube, it'll show you what it does and how to use it. Remember that many programs you use on Windows (such as Windows Live Messenger) do NOT work on Ubuntu, because Ubuntu is completely different and use different 'computer languages'.

Hope that helps you understand it a bit more.

Thank you everybody for your help. Now I know much more than before!